Window.



C. T. SA LVESEN.

WINDOW.

APPLICATION FILED DBO. s, 1913,

RAUL-@503 Patented Aug. 18, 1914.

Suva Wow IHL Amems PETERS ca, PIIOTO-LITHO. WASHINGTON, DV 1:.

CLEMENT T. SALVESEN, OF CHICAGO, ILLINOIS.

WINDOW.

Specification of Letters Patent.

Application filed December 8, 1913.

Serial No. 805,445.

To aZZ whom it may concern Be it known that I, CLEMENT T. SALVE- SEN,citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Windows, of which the following is a specification.

The subject-matter of the present invention is directed'to new anduseful improvements in windows, and aims particularly to provide a novelform of ventilator which may be manipulated to admit a small current ofair into a room Without necessitating the complete opening-of the Windowsashes.

A further object is to provide ventilating devices of the characterdescribed, mounting these elements at the upper terminal of the uppersash and the lower terminal of the lower sash.

A yet further object is to removably mount the ventilating opening ofthe lower sash so that it may be quickly and conveniently applied to orremoved from the lower sash as conditions may demand.

An object of equal importance with the foregoing is to mount the twosashes in such manner that they may be readily adjusted within thecasing and held in adjusted position without employing for this purposeweights and weight ropes.

This invention aims still further to provide a window embodying thefeatures above set forth which may be cheaply manufactured, will bedurable and eflicient in its action and, consequently, will not beliable tobecome broken or damaged in ordinary use.

The above and additional objects are accomplished by such means as areillustrated in the accompanying drawings, described in the followingspecification, and then more particularly pointed out in the claimswhich are appended hereto and form a part of this application.

l/Vith reference to the drawings, wherein there has been illustratedthepreferred embodiment of this invention as it is reduced to practice. andthroughout the several views of which similar reference numeralsdesignate corresponding parts, Figure .1 is a perspective view showingthe upper sash of the window slightly lowered; Fig. 2 is a section onthe line 2-2 of Fig. 1; Fig. Sis a section on the line 3+3 of Fig. 2;Fig. 4

j perspective view is a section on the line 4-4 of Fig. 2; Fig. 5 1s aperspective view illustrating in detail the ventilating plate which iscarried by the lower sash of the window; and Fig. 6 is a showing the vtending at right angles to the sash.

Coming now to the detailed description of the drawings, and withparticular reference to Fig. l in which the trated as an entirety, itwill be observed that this invention includes broadly a sash casing 10,and upper and lower sashes l1 and 12 respectively. The casing 10 is ofthe usual construction, being substantially rectangular in shape, and isprovided on the inner face of each side frame member withguide strips,as at 13- and 14 and 15 and 16. Therear edges of the side frame membersof the window casing are provided with guide strips 17 and 18. members16 and 15 are disposedvertically in the casing and at approximatecentralpoints thereof. The middle portion of each of the members 15 and 16 isrecessed, as at 19 and 20, in order topermit the positioning ofcog-wheels 21 and 22 which are rotatably Patented Aug.1l8, 1914.

entilating bars of the upper sash in open position exinvention is bestillus It will thus be seen that the,

mounted on pins or axles 23 and 24. These cogwheels are arranged to meshwith the teeth of the rack bars 25, 26, 27 and 28 which are secured tothe upper and lower sashes, as will be readily observed upon referenceto the figures. I

From the foregoing descriptiomit will be obvious that if the upper sashis moved upwardly through the casing, its rack bars 25 and 26 willrotate the cog wheels 23 and 24, and that these members will in turnimpart a downward movement to the upper sash 12. It will also be notedthat the downward movement of the lower sash will operate to move theupper sash upwardly through the casing by the same means. It now becomesapparent that by providing the rack bars and cooperating cog wheels, allnecessity of employing window weights and cords is eliminated, and thatthe sashes, b eing approximately equal in length, will bal'-' ance oneanother in any adjusted position within thewindow casings. A suitableform of latch is, of course, provided as indicated at 29 forlocking thetwo sashes in closed position.

As hereinbefore stated, "one of the princi of air into the room withoutrequiring that seen that even though "the sash,

the window sashes be adjusted within the casings. In accomplishing thisresult, the present invention employs apair of ventilating bars 30 and31 which are approximately equal in length to-one half the width of theupper casing and are pivoted on the upper portion thereof by pivot pins32 and ,33. These ventilating bars are preferably pivoted attheiradjacent terminals but, if so desired, the structure may be modified bypivoting. the ventilating bars at their upper terminals.

When it is desired topartially ventilate the room, it is only necessaryto swing the ventilating bars on their pivot points by grasping thehandle bars 34: and 35, swingingthe bars inwardly into the casing, andbring themat right angles to the plane of In the preferred form, theguide members 14 and 16' are cut-away at their upper portions, as at 36and 37, to produce a pair of stop shoulders 38 and 39. These stopshoulders are provided so that when desired the upper sash 12 maybemoved downwardly a slight distance through the casing and theventilating bars swung inwardly, as in Fig.

I 3, to engage agamst the shoulders,thus holding the sash againstfurther downward movement through the casing but, at the same time,providing a ventilating space, as indicated'at 4:0 in Fig. 2. It willthus be the sashes remain securely locked, the ventilating bars 80 and31 may besw'ung inwardly to provide two ventilating openings, asindicated at 4:1 and 12,0r that the upper sash may be moved downwardly aslight distance through the casingand theventilating bars then movedinto engagement with the shoulders 38 and 39, thus producing aventilating opening of considerable size.

Coming now to the ventilating device which is applied to the lower sash,and referring particularly to Fig. 5, in which this feature of theinvention is best illustrated, it will be observed that this element ofthe invention consists essentially in a substantially rectangular platewhich is in length approximately equal tome width of the sash. Thisventilating plate, which .will be hereinafter designated by thenumeral43, may be formed of sheet metal or, if so desired, from a relativelythin sheet ofcomposition or wood. In orderto I minal with verticallyextending slots,

' terminal of each removably mount this plateon the lower sash,it hasbeen formed adjacent each tarin 1- 45. Adjacent the lower of these slotsis formed an offset notch as shown at 16 and 4:7. Screws cated at 14;and

lower portion of may thus description of the or othersuitable fasteningdevices, indicated at 48, are applied to the lower portion of the sash11, and are adapted to be inserted through the slots of the plate 4L8.Inthis connection, it is to be" noted thatthe only points through whichthe heads of these fastening devices will pass is at the junctureconsequently the plates will be held against displacement unless theheads of the fasten "in'g devices are brought into registration 'w1ththe points at which notches merge into each other.

the slots and .of the offset notches and the slots, and that When thelower sash 11 is in closed posi- I tion, as indicated in Fig. 1, theoperator moves the plate transversely through the ash by grasping thehandle member 19, disposing the fastening devices in the notches, thushold'ng. the plate against accidental displacement. When it is desired,however, to -move the upper sash downwardly such-a distance as willpermit the engagement of the ventilating bars 30 and 31 with theshoulders of the members same time, to have 15 and 16 and, at the theresultant opening be- ;tween the bottom of the lower sash 11 and fll'lewindow casing closed, it is only neces- 'sary to move the Ventilatingplate 13 transversely through the casing to bring the fas-- teningdevices into the slots so that the plate may be dropped into engagementwith the adjacent edge of the bottom frame member ofthe window casing.The space produced between the the sash 11 and the window upwardmovement of the sash be closed so that only a small current of air willenter throughthe space between the upper portion of the casing and theventilating bars30 and 31. .A suitable casing by the hand grip,indicated at 49, may be provided for the lower sash in orderto'facilitate the operation of raising and lowering this member.

In concluding the description of the draw- .ings, it to the is desirableto again direct attention fact that the window sashes and associatedventilating elements of this inven tion are constructed with all dueregard to simplicity and efficiency, and that the window may,consequently, be cheaply manufactured, will be durable and eflicient inits action, and will not be liable to become broken or. damaged inordinary use.

In reduction to practice, it has been found that the form of thisinvention illustrated in the drawings, and referred to in the abovedescription as the preferred. embodiment of the invention, is the mostefficient and prac- I ,tical; yet realizing that the conditions con-Ecurrent with the adoption of this device will necessarily vary, it isdesired to emphasize the fact that various minor changes in details ofconstruction, proportion and arrangement of parts may be resorted to,when to bring its lower edge and the upper end of the casing required,without sacrificing any of the advantages of this invention, as definedin the appended claims.

What is claimed is l. A window including a casing, vertical guidesmounted therein, shoulders formed 7 adjacent the upper terminals of theguides, a

sash slidable 1n the casing, and a pair of Ventilating bars pivotallymounted on the upper bar of the sash, the free terminals of theventilating bars being engageable with the shoulders of the guidemembers whereby the sash may be lowered to provide a ventilating spacebetween the upper sash bar and may be held against further downwardmovement through the casing.

2. A window including a casing having vertical guide members providedadjacent their upper terminals with shoulders, a sash slidable in thecasing, and a pair of swingingly mounted ventilating bars at tached tothe upper sash bar of the sash, said ventilating bars being movable to aposition whereby the sash may be moved freely through the casing, beingalso movable to a position in which their free terminals engage theshoulders whereby the sash may be lowered to provide a ventilating spacebetween the sash bars and the up as per end of the casing and heldagainst further downward movement through the casing.

3. A. window including a casing having vertical guide members, a sashslidable between the guides, shoulders formed adjacent the upperterminals of certain of the guides, a pair of ventilating bars pivotallyattached at their inner adjacent terminals to the approximate center ofthe upper sash bar of the sash, said ventilating bars being adapted tobe longitudinally alined whereby they extend in the plane of the lowersash bar for permitting the sash to be freely moved through the casing,said sash bars being also adapted to be swung to engage their freeterminals with said shoulders whereby the sash may be lowered to providea ventilating space between the upper sash bar and the upper end of thecasing, and then held against further downward movement through thecasing.

In testimony whereof I aifix my signature in presence of two witnesses.

CLEMENT T. SALVESEN. [1 s.]

Witnesses:

FRANK REHA, STETE GLooKMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

